Minimal inhibitory concentrations (MIC in µg/mL) of the T. wortmannii compound C in comparison with antibiotics used for acne treatment on different P. acnes strains.

Compound C, minocycline, erythromycin and doxycycline were tested in a 96 well dilution assay under anaerobic conditions and the minimal inhibitory concentration (MIC) defined 24–48 h later as described in table 1. Tests were done in triplicates and the table shows the average value of multiple MIC tests.